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Question
Factorise the following.
p2 – 13p – 30
Sum
Solution
We have,
p2 – 13p – 30 = p2 – (15 – 2)p – 30
= p2 – 15p + 2p – 30
= p(p – 15) + 2(p – 15)
= (p – 15)(p + 2)
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Chapter 7: Algebraic Expression, Identities and Factorisation - Exercise [Page 235]
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